Well I bought a 300SD that would go over 40 unless u went down a big hill. I stoled the car. 1st question: When cranking engine does turn over real fast? If so adjust the valves. These engines close the valves as they wear. Which causes low compression, hence no power. Also change fuel filters and look for cracked hoses that would suck air in to the system. A cracked hand pump would cause this also. Good luck

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I like to Drive
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